In-country rivalries were the order of the day on Tuesday at Indian Wells, where No. 8 seed Andy Roddick shut down the giant-serving No. 30 seed John Isner 7-5, 6-2 in an all-American battle, and No. 19 Ana Ivanovic won the all-Serb encounter against No. 6 Jelena Jankovic 6-4, 6-2.

The big-serving encounter between Roddick and Isner advanced to 7-5, 4-2 in only an hour as the players exchanged few rallies. For Roddick it was revenge for a loss to Isner at the US Open.

Ivanovic looked like the confident former No. 1 in blitzing Jankovic, who looked to be struggling for motivation in the face of her fist-pumping countrywoman.

Ivanovic improved to 7-3 lifetime against Jankovic.

American Ryan Harrison defeated Canadian Milos Raonic in a battle of future stars 7-6(1), 4-6, 6-4.

On the women’s side world No. 2 Kim Clijsters hit a road block when she was forced to retire against Marion Bartoli with a shoulder injury.

“When I’m not training it feels fine but as I got into hitting a little bit more again, it slowly just flared up a little bit,” Clijsters told the media. “On hardcourts I know that I am able to control it. I’m concerned for what’s coming up next, and that’s the claycourt season.”